Indigenous microbial influence on REE enrichment and fractionation in South China weathering crusts: Insights from experimental simulations
文献类型：期刊论文
| 作者 | Li, Xurui2; Ma, Lingya2,3; He, Yilin1,2; Liang, Xiaoliang1,2 ; Zhu, Jianxi1,2; He, Hongping1,2
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| 刊名 | CHEMICAL GEOLOGY
 |
| 出版日期 | 2024-09-20 |
| 卷号 | 663页码:8 |
| 关键词 | Rare earth element Indigenous microorganism Biosorption REE fractionation |
| ISSN号 | 0009-2541 |
| DOI | 10.1016/j.chemgeo.2024.122263 |
| 英文摘要 | The activity of microorganism plays an important role on the enrichment, migration and fractionation of rare earth elements (REEs) in the supergene environment. To investigate the characteristics of indigenous microorganisms on the enrichment and fractionation of REEs, we studied the adsorption efficiencies of REEs by 30 indigenous microbial strains that were isolated and cultured from the weathering profile of a regolith-hosted REE deposit in South China. Most microbial strains exhibited high adsorption efficiencies for REEs, ranging from 2.3 to 42.9 mg g(-1). Notably, the taxonomic classification of microorganisms significantly influenced the adsorption selectivity. Gram-positive bacteria exhibited a pronounced enrichment of the heavy REEs, while gram-negative bacteria showed no obvious adsorption preference. The tetrad effects were observed in REE adsorption patterns of gram-negative bacteria and fungi; however, fungi demonstrated a much higher affinity for light and medium REEs. Chemically modified microbial cells were employed to investigate the adsorption mechanism, revealing that distinct functional groups of microbial cells corresponded to the adsorption preference of microorganisms towards REE. Carboxyl and phosphate groups contributed to a relatively high adsorption capacity for light REEs and heavy REEs, respectively. The findings of our study suggest that the distinct composition of microbial groups may exert a significant influence on the biogeochemical cycle of REE in weathering profiles. |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001346418700001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/82055]  |
| 专题 | 中国科学院矿物学与成矿学重点实验室 |
| 通讯作者 | Ma, Lingya |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Geochem, CAS Key Lab Mineral & Metallogeny, Guangdong Prov Key Lab Mineral Phys & Mat, Guangzhou 510640, Peoples R China 3.Nanjing Univ, Sch Earth Sci & Engn, State Key Lab Ore Deposits Res, Nanjing 210023, Jiangsu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Xurui,Ma, Lingya,He, Yilin,et al. Indigenous microbial influence on REE enrichment and fractionation in South China weathering crusts: Insights from experimental simulations[J]. CHEMICAL GEOLOGY,2024,663:8. |
| APA | Li, Xurui,Ma, Lingya,He, Yilin,Liang, Xiaoliang,Zhu, Jianxi,&He, Hongping.(2024).Indigenous microbial influence on REE enrichment and fractionation in South China weathering crusts: Insights from experimental simulations.CHEMICAL GEOLOGY,663,8. |
| MLA | Li, Xurui,et al."Indigenous microbial influence on REE enrichment and fractionation in South China weathering crusts: Insights from experimental simulations".CHEMICAL GEOLOGY 663(2024):8. |
入库方式： OAI收割
来源：广州地球化学研究所
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